Mechanical Engineering MCQ

11-Maximum fluctuation of energy is the

(A) Sum of maximum and minimum energies

(B) Difference between maximum and minimum energies

(C) Ratio of maximum and minimum energies

(D) Ratio of mean resisting torque to the work done per cycle

 

12-Which property is needed for materials, used in tools and machines?

(A) Plasticity

(B) Ductility

(C) Elasticity

(D) Malleability

 

13-Bernoulli’s theorem for liquid is applicable for which of the following?

(A) Viscous fluids

(B) Incompressible fluids

(C) Compressible fluids

(D) Turbulent flow

 

14-Which of the following is an example of a pendulum type governor?

(A) Hartnell governor

(B) Porter governor

(C) Pickering governor

(D) Watt governor

 

15-Which of the following is added to aluminium to increase its casting ability?

(A) Copper

(B) Magnesium

(C) Silicon

(D) Lead and Bismuth

 

16-For optimum level of quality, which of the following cost should be minimum?

(A) Direct cost

(B) Indirect cost

(C) Appraisal cost

(D) Total cost

 

17-A high speed diesel engine theoretically operates on

(A) Constant temperature cycle

(B) Constant pressure cycle

(C) Constant entropy cycle

(D) Mixed cycle of constant pressure and constant volume

 

18-The process capability indicates that the product produced will be in the range of

(A) ±σ limits

(B) ±3σ limits

(C) ±4σ limits

(D) ±6σ limits

 

19-The difference between actual sales and breakeven point is known as

(A) Margin of safety

(B) Price-cost margin

(C) Contribution

(D) Profit

 

20-The refrigerant R-717 is

(A) Air

(B) Water

(C) Ammonia

(D) Carbon dioxide

 

ANSWERS:

11-(B), 12-(C), 13-(B), 14-(D), 15-(C), 16-(D), 17-(D), 18-(B), 19-(A), 20-(C)